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SubjectRe: CPU Model IDs(string) inconsistant on SMP AMD System (2.4.18-rc4)
Hello,

The same thing is happening on our Tyan S2460 motherboards, running
2.4.19-pre4-ac2. IIRC it is the BIOS that sets these strings.
Maybe it is fixed in the latest BIOS update ? (I have not been
brave enough to upgrade them)

Regards,

Maarten Ballintijn.

On Thu, Mar 28, 2002 at 12:05:12PM -0800, Adam D Scislowicz wrote:
> I am working with several SMP Athlon machines, and they are all
> reporting the first CPUs
> model ID(*** called 'model name' in /proc/cpuinfo) as 'AMD Athlon(tm) MP
> 1800+' and the
> second CPUs model ID as 'AMD Athlon(tm) Processor'.
>
> From looking at the code it seems that the model IDs are obtained using
> cpuid calls. Does
> anyone have insight into this?
>
> Some Info:
> Motherboard: Tyan S2462NG
> CPUs: 2 Athlon MP 1800+
> Kernel Version: 2.4.18-rc4
>
> Adam Scislowicz
> Soft. Engineer
> Fourelle Systems, Inc.
> P.S: Please CC me in response.
>
> *** Extra Info ***
> ---------------------------------------------
> - bash-2.04# cat /proc/cpuinfo -
> --------------------------------
> processor : 0
> vendor_id : AuthenticAMD
> cpu family : 6
> model : 6
> model name : AMD Athlon(tm) MP 1800+
> stepping : 2
> cpu MHz : 1526.541
> cache size : 256 KB
> fdiv_bug : no
> hlt_bug : no
> f00f_bug : no
> coma_bug : no
> fpu : yes
> fpu_exception : yes
> cpuid level : 1
> wp : yes
> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
> cmov pat pse36 mmx fxsr sse syscall mmxext 3dnowext 3dnow
> bogomips : 3047.42
>
> processor : 1
> vendor_id : AuthenticAMD
> cpu family : 6
> model : 6
> model name : AMD Athlon(tm) Processor
> stepping : 2
> cpu MHz : 1526.541
> cache size : 256 KB
> fdiv_bug : no
> hlt_bug : no
> f00f_bug : no
> coma_bug : no
> fpu : yes
> fpu_exception : yes
> cpuid level : 1
> wp : yes
> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
> cmov pat pse36 mmx fxsr sse syscall mmxext 3dnowext 3dnow
> bogomips : 3047.42
>
> -----------------------
> - bash-2.04# dmesg -
> --------------------
> Linux version 2.4.18-rc4 (root@r2bm.fourelle.com) (gcc version 2.96
> 20000731 (Red Hat Linux 7.1 2.96-85)) #6 SMP Mon Mar 18 12:04:07 PST 2002
> BIOS-provided physical RAM map:
> BIOS-e820: 0000000000000000 - 000000000009f800 (usable)
> BIOS-e820: 000000000009f800 - 00000000000a0000 (reserved)
> BIOS-e820: 00000000000e4800 - 0000000000100000 (reserved)
> BIOS-e820: 0000000000100000 - 0000000040000000 (usable)
> BIOS-e820: 00000000fec00000 - 00000000fec10000 (reserved)
> BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
> BIOS-e820: 00000000fff80000 - 0000000100000000 (reserved)
> 128MB HIGHMEM available.
> found SMP MP-table at 000f74d0
> hm, page 000f7000 reserved twice.
> hm, page 000f8000 reserved twice.
> hm, page 0009f000 reserved twice.
> hm, page 000a0000 reserved twice.
> On node 0 totalpages: 262144
> zone(0): 4096 pages.
> zone(1): 225280 pages.
> zone(2): 32768 pages.
> Intel MultiProcessor Specification v1.4
> Virtual Wire compatibility mode.
> OEM ID: TYAN Product ID: GUINNESS APIC at: 0xFEE00000
> Processor #1 Pentium(tm) Pro APIC version 16
> Processor #0 Pentium(tm) Pro APIC version 16
> I/O APIC #2 Version 17 at 0xFEC00000.
> Processors: 2
> Kernel command line: root=/dev/rd/0 rd_size=98304 mem=1048576K
> Initializing CPU#0
> Detected 1526.541 MHz processor.
> Console: colour VGA+ 80x25
> Calibrating delay loop... 3047.42 BogoMIPS
> Memory: 1005116k/1048576k available (1236k kernel code, 43072k reserved,
> 340k data, 228k init, 131072k highmem)
> Dentry-cache hash table entries: 131072 (order: 8, 1048576 bytes)
> Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
> Mount-cache hash table entries: 16384 (order: 5, 131072 bytes)
> Buffer-cache hash table entries: 65536 (order: 6, 262144 bytes)
> Page-cache hash table entries: 262144 (order: 8, 1048576 bytes)
> CPU: Before vendor init, caps: 0383fbff c1cbfbff 00000000, vendor = 2
> CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
> CPU: L2 Cache: 256K (64 bytes/line)
> CPU: After vendor init, caps: 0383fbff c1cbfbff 00000000 00000000
> Intel machine check architecture supported.
> Intel machine check reporting enabled on CPU#0.
> CPU: After generic, caps: 0383fbff c1cbfbff 00000000 00000000
> CPU: Common caps: 0383fbff c1cbfbff 00000000 00000000
> Enabling fast FPU save and restore... done.
> Enabling unmasked SIMD FPU exception support... done.
> Checking 'hlt' instruction... OK.
> POSIX conformance testing by UNIFIX
> mtrr: v1.40 (20010327) Richard Gooch (rgooch@atnf.csiro.au)
> mtrr: detected mtrr type: Intel
> CPU: Before vendor init, caps: 0383fbff c1cbfbff 00000000, vendor = 2
> CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
> CPU: L2 Cache: 256K (64 bytes/line)
> CPU: After vendor init, caps: 0383fbff c1cbfbff 00000000 00000000
> Intel machine check reporting enabled on CPU#0.
> CPU: After generic, caps: 0383fbff c1cbfbff 00000000 00000000
> CPU: Common caps: 0383fbff c1cbfbff 00000000 00000000
> CPU0: AMD Athlon(tm) MP 1800+ stepping 02
> per-CPU timeslice cutoff: 731.31 usecs.
> enabled ExtINT on CPU#0
> ESR value before enabling vector: 00000000
> ESR value after enabling vector: 00000000
> Booting processor 1/0 eip 2000
> Initializing CPU#1
> masked ExtINT on CPU#1
> ESR value before enabling vector: 00000000
> ESR value after enabling vector: 00000000
> Calibrating delay loop... 3047.42 BogoMIPS
> CPU: Before vendor init, caps: 0383fbff c1cbfbff 00000000, vendor = 2
> CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
> CPU: L2 Cache: 256K (64 bytes/line)
> CPU: After vendor init, caps: 0383fbff c1cbfbff 00000000 00000000
> Intel machine check reporting enabled on CPU#1.
> CPU: After generic, caps: 0383fbff c1cbfbff 00000000 00000000
> CPU: Common caps: 0383fbff c1cbfbff 00000000 00000000
> CPU1: AMD Athlon(tm) Processor stepping 02
> Total of 2 processors activated (6094.84 BogoMIPS).
> ...
>
> -
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